“As many of you may already know, there is this thing called a 1-9-90 rule of online participation. In any given online community, about 1% of the participants produce most of the content, another 9% participate regularly by editing (e.g., on a wiki), commenting (on blogs and articles), occasionally producing new content (in forums, etc), and the remaining 90% are ‘lurkers’ who do not publicly participate but only read (though these days, many of them participate a little more publicly, if not creatively, by “Liking”, tweeting, and otherwise sharing the content in ways that are visible to others, but without adding any thoughts of their own).”

“Some of those 9% of readers, instead of commenting on the post (at least a brief “Nice post, thank you”) are now sharing the link elsewhere and perhaps discussing it elsewhere, without the author of the original article ever being able to see that discussion. […] most of the good, nice, constructive commenters may have gone silent and taken their discussions of your blog elsewhere, but the remaining few commenters are essentially trolls.”

Source – Commenting threads: good, bad, or not at all, Bora Zivkovic